PowerEdge T100 Broadcom recognized but not working

The installation went smoothly and the BCM5722 is recognized, however, it isn't working at all, even the activity LEDs aren't flashing. I checked in the BIOS if the activity LEDs work (they do) and if the NIC is enabled (it is). Yet nothing happens further than that. Also I tried different working ethernet cables and switch ports, nothing...

Should I think the NIC isn't working anymore? Or maybe i'm missing a parameter in the BIOS Menu?

Re: PowerEdge T100 Broadcom recognized but not working

I tried swiping the cards, removed the second NIC, still nothing.

Nn the IRQ table in the BIOS menu, Embedded USB UHCI controller 4 and Embedded NIC are linked (if i change one, the other changes as well to the same IRQ), as well as the SCSI adapter and the second NIC (slot 1&4).